{
  "entry": {
    "kind": "vuln",
    "slug": "cve-2026-26118",
    "name": "CVE-2026-26118",
    "vendor": "MarkItDown MCP server",
    "description": "Microsoft's MarkItDown MCP server placed no restrictions on the URI passed to convert_to_markdown, allowing any caller to reach internal HTTP resources including the AWS EC2 instance metadata service and retrieve access keys sufficient for full cloud account takeover. BlueRock Security scanned 7,000+ live MCP servers and found 36.7% shared the same SSRF exposure; Microsoft patched a related Azure MCP variant in March 2026 Patch Tuesday.",
    "website": "https://www.bluerock.io/post/mcp-furi-microsoft-markitdown-vulnerabilities",
    "repository": null,
    "documentationUrl": null,
    "license": null,
    "version": null,
    "trustLevel": "advisory",
    "capabilities": [],
    "packaging": null,
    "configFiles": null,
    "category": "mcp-server",
    "updatedAt": "2026-01-20",
    "risk": {
      "score": 90,
      "band": "critical",
      "signals": [],
      "dangerousCombos": []
    },
    "dangerousCombos": [],
    "vuln": {
      "id": "CVE-2026-26118",
      "aliases": [
        "ti-007"
      ],
      "title": "\"MCP fURI\" + CVE-2026-26118: Microsoft MarkItDown MCP SSRF to AWS Cloud Takeover",
      "summary": "Microsoft's MarkItDown MCP server placed no restrictions on the URI passed to convert_to_markdown, allowing any caller to reach internal HTTP resources including the AWS EC2 instance metadata service and retrieve access keys sufficient for full cloud account takeover. BlueRock Security scanned 7,000+ live MCP servers and found 36.7% shared the same SSRF exposure; Microsoft patched a related Azure MCP variant in March 2026 Patch Tuesday.",
      "severity": "critical",
      "cvss": {
        "score": null,
        "vector": null,
        "version": null
      },
      "cwe": [],
      "attackType": [
        "Server-side request forgery"
      ],
      "componentType": "mcp-server",
      "component": {
        "name": "MarkItDown MCP server",
        "vendor": null,
        "package": null,
        "ecosystem": null,
        "catalogSlug": null
      },
      "affected": [
        {
          "range": "MarkItDown MCP server (all versions pre-patch)",
          "fixed": null
        }
      ],
      "exploited": false,
      "exploitPublic": false,
      "publishedAt": "2026-01-20",
      "modifiedAt": "2026-01-20",
      "lastVerified": "2026-11-01",
      "references": [
        {
          "type": "article",
          "url": "https://www.bluerock.io/post/mcp-furi-microsoft-markitdown-vulnerabilities"
        },
        {
          "type": "cve",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-26118"
        }
      ],
      "mitigation": "Update MarkItDown MCP server to patched version. Block MCP server access to cloud metadata endpoints (169.254.169.254). Restrict URI schemes to https:// only in MCP tool inputs.",
      "detectedByAnomity": true
    }
  }
}